This randomized clinical trial compares the effectiveness of a tai ji quan intervention with multimodal exercise and stretching exercise in reducing falls in older adults who had fallen in the past year.

This randomized, double-blind crossover trial investigates the effect of 2 air filtration systems vs a sham unfiltered system on personal exposures to fine particulate matter and blood presssure among older adults in a US urban location.

This randomized clinical trial examines outcomes of participation in an individually designed single-patient multi-crossover (n-of-1) trial supported by a mobile app compared with usual care among patients with chronic musculoskeletal pain.

This case report describes a man in his 50s with no medical history of heart or lung disease who presented with progressive dyspnea on exertion due to chronic thromboembolic pulmonary hypertension and was misdiagnosed with WHO group 1 idiopathic pulmonary arterial hypertension.

This case report presents the electrocardiographic findings of a man in his 70s with a history of type 2 diabetes and hypertension who presented with syncope; there was no seizure activity or preceding chest pain, palpitations, or shortness of breath.

This study analyzes whether the lowered blood pressure threshold for hypertension in the 2017 American College of Cardiology/American Heart Association guidelines vs the JNC7 guidelines are associated with diagnosis prevalence of hypertension among adults in India.

This study uses publicly available FDA summaries to analyze the quality of evidence in pivotal studies that support cardiovascular premarket device approval under FDA priority review from 2007 to 2017.

This observational study of a health care system population assessed whether prenatal marijuana use is elevated among women with nausea and vomiting in pregnancy who underwent universal screening for marijuana use.